Larreche, J.C., The Momentum Effect. 1st ed. New, Jersey: Wharton School Publishing, 2009.
Li, Charlene and Josh, Bernoff., Groundswell: Winning in a World Transformed by Social Technologies. 1st ed. Boston: Harvard Business School Press, 2008.
Powell, Guy R., Marketing Calculator. Singapore: John Wiley & Sons, 2008.
Roeder, Linda, “14 Reasons You Should Join a Social Network.” Former About.com Guide, http://personalweb.about.com/od/easyblogsandwebpages/a/whatsocialnetwo.htm, December 2009.
Safko, Lon and David K. Brake., The Social Media Bible: Tactics, Tools, and Strategies for Business Success. New Jersey: John Wiley & Sons, 2009.